Shoring fixture for poured concrete construction

ABSTRACT

A shoring fixture for pouring an overhead concrete structure having a vertically adjustable post, a crosshead affixed to the upper end of the post, a pair of deck sections which have their inner ends supported on the crosshead in end-to-end abutting relation, and a brace assembly extending between the post and the outer end of each deck section for supporting the deck sections in a pouring position. Each deck section is pivotally connected to the shoring post by its respective brace assembly in a manner which permits the deck section to be folded to a collapsed position so that the deck sections lie along the shoring post to facilitate storing and transporting of the shoring fixture. Shoring fixtures of this invention may be arranged in parallel rows with the outer ends of the deck sections of the shoring fixtures in each row being joined together by extensible members carried by the deck sections to constitute a shoring system.

United States Patent Ficken et a1,

[451 Nov. 12, 1974 SHOlRllNG FIXTURE FOR POURED CONCRETE CONSTRUCTION [52] 11.5. C1 249/18, 249/188, 248/357 [51] Int. Cl. E04g 11/48 [58] Field oi Search 249/17, 18, 19, 20, 24,

[56] References Cited UNITED STATES PATENTS 1,958,933 5/1934 Williams 249/18 X 2,167,413 7/1939 Bartlett 249/210 X 2,202,096 5/1940 Dell 249/210 X 2,616,148 11/1952 Hawes 249/18 3,047,931 8/1962 Boettner 249/18 3,088,562 5/1963 Jones 249/210 X 3,130,470 4/1964 Bowden 249/28 3,162,418 12/1964 Dudley 249/210 X 3,239,188 3/1966 Gostling... 249/18 X 3,430,910 4/1969 Bowden 249/210 X 3,520,508 7/1970 Sewell 249/18 3,533,592 10/1970 Jennings 249/18 Young 249/18 Pipala 249/18 X Primary Examiner.1. Spencer Overholser Assistant E.\'aminer-John S. Brown Attorney, Agent, or Firm-Koenig, Senniger, Powers and Leavitt [57] ABSTRACT A shoring fixture for pouring an overhead concrete structure having a vertically adjustable post, a crosshead affixed to the upper end of the post, a pair of deck sections which have their inner ends supported on the crosshead in end-to-end abutting relation, and

a brace assembly extending between the post and the outer end of each deck section for supporting the deck sections in a pouring position. Each deck section is pivotally connected to the shoring post by its respective brace assembly in a manner which permits the deck section to be folded to a collapsed position so that the deck sections lie along the shoring post to facilitate storing and transporting of the shoring fixture. Shoring fixtures of this invention may be arranged in parallel rows with the outer ends of the deck sections of the shoring fixtures in each row being joined together by extensible members carried by the deck sections to constitute a shoring system.

18 Claims, 11 Drawing, Figures PATENTEDNUV 12 4914 3,847,340

sum u or 4 FIG& F|G.9

BACKGROUND OF THE INVENTION This invention relates to a shoring fixture for supporting a static mold for in situ construction of an overhead poured concrete structure and to a shoring system utilizing a plurality of such shoring fixtures for supporting molds for pouring overhead concrete slabs and over head beams.

US. Pat. Nos. 1,013,632, 3,162,418, 3,430,910 and 3,445,084 are examples of prior art shoring fixtures and shoring systems forpouring overhead concrete structures. Briefly, these prior art shoring fixtures include the provision of a vertically adjustable shoring post, horizontal members supported by the shoring post, and slab-forming panels supported on the horizontal support members. The prior art shoring systems using these prior art'shoring fixtures require that the shoring posts and the horizontal members be first assembled in their desired positions and then the slabforming panels be individually installed thereon. After pouring the concrete structure, these prior art shoring systems must be completely disassembled to strip the panels from the poured structure and to move them to another pouring location. This complete disassembly of the shoring system results in substantial labor costs. Furthermore, these prior art shoring systems are not dimensionally adjustable to accommodate various concrete structures which are to be formed, and special forms must often be fabricated for these structures.

SUMMARY OF THE INVENTION Among the several objects of this invention may be noted the provision of a shoring fixture which may be erected as a unit with a pouring surface in place to support an overhead concrete structure; the provision of such a shoring fixture in which its slab pouring surface, i.e., its deck sections, are adapted to form vertical walls as well as horizontal slabs; the provision of such a shoring fixture which may be folded to a collapsed position to facilitate transporting and storing of the fixture; the provision of such a shoring fixture which may be moved into position in its collapsed position and then unfolded into an erected position; the provision of such a shoring fixture which may be used in combination with other such shoring fixtures to form a shoring system having a plurality of parallel rows of shoring fixtures with the outer ends of the deck sections of the adjacent shoring fixtures in each row being rigidly. joined together; the provision of such a shoring system which is vertically and horizontally adjustable to form most poured concrete structures; the provision of such a shoring system, in which groups of shoring fixtures may be moved as a unit without disassembly to facilitate stripping of the fixtures from a poured structure and for re-erecting of the fixtures in a new pouring location; the provision of such a shoring system which may be substantially erected from below its overhead pouring surfaces; and the provision of such a shoring system which is adapted to form overhead poured concrete beams. Other obsections adapted to be supported in end-to-end abutting relation on the upper end of the post with the abutting ends of the deck sections bearing on the crosshead. Means are provided for detachably securing the abutting ends of the deck sections on the crosshead. Means for bracing the deck sections extend between the post and the deck section with these means being connected to the deck sections adjacent their outer ends.

I this invention showing two parallel rows of shoring fixjects and features of this invention will be in part apparcut and in part pointed out hereinafter.

Generally, a shoring fixture of this invention for poured concrete construction comprises a post, a crosshead at the upper end of the post, a pair of deck tures of this invention;

FIG. 2 is a side elevation of a shoring fixture of this invention in its erected position;

FIG. 3 is a side elevation of a row of three shoring fixtures of this invention with the outer ends of the deck sections of adjacent shoring fixtures secured together and with the struts of each shoring fixture secured together for forming a rigid truss-like unit adapted to be moved as a unit; FIG. 4 is an end elevation of the shoring fixture;

FIG. 5 is a side elevation of the shoring fixture in its collapsed condition;

FIG. 6 is an enlarged side elevation showing the outer ends of two adjacent shoring fixtures in a row supporting a mold for forming a poured concrete beam;

FIG. 7 is an enlarged vertical section on line 77 of FIG. 4;

FIG. 8 is a side elevation of a plurality of deck sections of this invention arranged to constitute a mold for pouring a vertical concrete wall;

FIG. 9 is a vertical section on line 9--9 of FIG. 8;

FIG. 10 is an enlarged vertical section on line 10-10 of FIG. 1; and

FIG. 11 is a horizontal section on line lll1 of FIG. 10.

Corresponding reference characters indicate corresponding parts throughout the several views of the drawings.

DESCRIPTION OF THE PREFERRED EMBODIMENT Referring to the drawings, a shoring system, indicated in its entirety at 1, is shown to comprise a plurality of shoring fixtures of this invention, each generally indicated at 3, arranged end-to-end in substantially parallel rows R in position to support an overhead concrete slab or the like (not shown) which is to be poured. Each shoring fixture 3 includes a vertically adjustable shoring post 5, a crosshead beam 7 at the upper end of the post, a pair of deck sections (or mold sections), each generally indicated at 9, supported in end-to-end abutting relation at the upper end of the The system 1 further includes means generally indicated at 15 for securing together the outer end of each .deck section 9 of one shoring fixture 3 and the outer end of the deck section of an adjacent shoring fixture in the same row R of shoring fixtures. A pair of struts constituting means for interconnecting and bracing the shoring posts of the fixtures in row R are provided on each shoring post, each strut being indicated at 17 and being secured to the shoring post on opposite sides thereof for extending horizontally therefrom in the line of the row. i

Each shoring fixture 3 has lateral brace members 19 extending diagonally between the shoring fixtures in one row R of shoring fixtures and the shoring fixtures in adjacent rows for laterally interconnecting the fixtures of the shoring system. As shown in FIG. 4, a brace member 19 is pivotally connected to each end of crosshead beam 7 by a pin 21, and each brace member is releasably connected to the shoring post of an adjacent shoring fixture in an adjacent row by a pin 23 carried by the adjacent shoring post below the crosshead beam thereon for laterally bracing the rows of shoring fixtures. Each brace 19 is provided with a series of mounting holes 25 in its outer end for receiving pin 23, the spacing of these mounting holes corresponding to various lateral spacings between the rows of shoring fixtures.

Each deck section 9 has a pair of spaced apart parallel side beams, each being indicated at 27, extending the length of the deck section, a plurality of joist members 29 extending transversely of the deck section beams and being secured thereto, and a deck panel 31 secured to the joist members with the upper surface of the deck panel constituting a pouring surface for supporting the concrete slab to be poured. The joist members 29 extend out beyond the lateral edges of the deck panels as indicated at 33 for supporting a filler panel 35 (see FIG. 1) of plywood or the like placed between the lateral edges of the deck panels 31 of one row R and the adjacent lateral edges of the deck panels 3101 an adjacent row. The upper surface of the deck panels and the upper surface of the filler panels are substantially flush (at the same elevation) for constituting an even pouring surface for forming the concrete slab.

More particularly, each shoring post 5 includes an upper tubularsection 37 which telescopically receives a lower section 39. The lower section has aseries of adjustment holes 41 (see FIG. 4) provided therein at substantially equal intervals therealong (e.g., 6 inches intervals between holes) for receiving a stop pin 43. The upper section carries a screw jack generally indicated at 45 at its lower end bearing on stop pin 43 and providing for infinite height adjustment of the shoring post. This jack is I a conventional commercially available screw jack. By moving the stop pin from one adjustment hole 41 to another and by'operating the screw jack, the height of the shoring post may be infinitely varied over a range generally corresponding to the length of the series of adjustment holes 41 (e.g., 5 feet).

The lower end of lower section 39 has a bearing plate.

47 affixed thereto constituting a base for the shoring post.

As shown in FIGS. 4 and 7, crosshead beam 7 is a wide flange I-beam extending transversely in respect to 1 deck sections 9, the length of the crosshead beam being approximately the width of the deck sections. It has an upper flange 49 which is adapted to support the inner ends of side beams 27.

Deck section side beams 27 are shown in FIG. 4 to be box beams having a rectangular crosssection for slidably receiving interconnecting members 51, each of the latter being longitudinally movable between a retracted position in which its outer end is withdrawn into its respective deck section beam and an extended position in which its outer end projects out beyond the end of the deck section. As shown in FIG. 2, each deck section has four interconnecting members 51, i.e., two in each deck section beam, for rigidly joining together the outer ends of the deck sections of adjacent shoring fixtures in a row R in end-to-end abutting relation and for rigidly joining together the inner abutting ends of the deck sections of a shoring fixture in a manner as will appear. In addition to interconnecting the ends of the deck sections together, interconnecting members 51 permit beam molds, generally indicated at 53 in FIG. 6, to be supported by the shoring system of this invention as shown in FIG. 6 for forming a poured concrete beam integral with the slab.

As shown in FIG. 2, a mounting plate 55 is secured to the bottom face of each deck section beam 27 at each end thereof. A retainer plate 57 (see FIG. 7) is carried on the inside of the deck section beam 27 at each end thereof and has threaded holes therein for receiving bolts 59 which extend through holes in the mounting plate and in the deck section beam for securing the mounting plates to the deck section beam. Each mounting plate 55 has a boss 61 at its inner end, i.e., the end nearest the mid-portion of the deck section beam, which projects downwardly therefrom for pivotal attachment of the upper end of brace assembly 13 to the outer end of the deck section. A pin 63 is carried by retainer plate 57 adjacent the end of the deck section beam; this pin projects downwardly from the plate 57 through a hole in the deck section beam and a hole in the mounting plate for being received in a hole 65 (see FIG. 7) in upper flange 49 of crosshead beam 7 when the ends of the deck sections are placed in position on the crosshead beam. A pinor a bent nail N may be inserted in a crosshole in pin 63 to prevent the deck section from becoming disengaged from the crosshead beam. Pins 63and holes 65 constitute means 11 for detachably securing together the abutting ends of the deck section on the crosshead beam.

Intermediate boss 61 and pin 63 of each mounting plate 55, a clamping screw 67 projects up through holes in the mounting plate and in the deck section beam 27 and is threaded in plate 57. The clamping screw extends upwardly from the plate 57 within the hollow deck section beam to engage an interconnecting member 51 for releasably clamping the interconnecting member between the deck section beam and the clamping screw. By backing off clamping screw 67, interconne'cting member 51 is released from the deck section beam for axial movement relative thereto. Clamping screw 67 may be turned by means of a ratchet wrench or the like (notshown) which engages the clamping screw from below. Thus, clamping screw 67 constitutes means 15 for releasably securing an interconnecting member relative to its deck section beam at any desired position of adjustment between its retracted position and its extended position.

As shown in FIG. 2, each deck section beam 27 has a pair. of axial slots (one in each vertical wall of the beam) adjacent each end thereof, each slot being indicated at 69. Each interconnecting member 51 is providedwith a pin 71 at its inner end, the ends of this pin projecting out through the slots 69. The length of slots 69 is sufficient to permit the interconnecting member to move between its extended position and its retracted position. Pin 71 prevents the interconnecting member from becoming disengaged from its respective deck section beam during erection or stripping of the shoring system.

As shown in FIG. 2, the outer ends of the deck sections 9 of adjacent shoring fixtures 3 in a row R may be rigidly joined together by fully retracting the interconnecting members 51 of one of the adjacent deck sections and by extending the interconnecting members of the other adjacent deck section so that the extended interconnecting members are received within the hollow deck section beams 27 of the adjacent deck section. Clamping screws 67 at the outer end of both adjacent deck sections are tightened to clamp the, interconnecting members which extend between the adjacent deck sections thereby securing the deck sections relative to one another. Similarly, the inner abutting ends of the deck sections 9 of one of the shoring fixtures may be securely connected together in endto-end abutting relation by means of the interconnecting members as above described. This provides for a more rigid interconnection between the abutting inner ends of deck section than is provided by pins 63 engaging holes 65 in the crosshead beam 7, but it will be understood that the pins 63 provide sufficient interconnection between the abutting ends of the deck sections for most applications without utilizing the interconnecting members.

As shown in FIG. 6, beam mold 53 for forming a concrete beam which extends transversely of rows R of the shoring fixtures comprises pairs of vertical members, each vertical member being indicated at 73, horizontal members75 extending between the vertical members 73, and beam forming panels 77 supported by the vertical and horizontal members. Each vertical member 73 has its upper end secured to the outer endof a respective interconnecting member 51 by a bolt 78. Vertical members 73 are provided with a series of equally spaced holes 79 along their length so that horizontal members 75 may be bolted thereto at various elevations for forming concrete beams of different depths. Similarly, each horizontal member '75 is provided with a series of holes 81 along its length so that the vertical members may be secured thereto at different positions therealong to vary the width of the beam to be formed. A gusset member 83 is placed between the vertical member and horizontal member at the joint thereof, this gusset being rigidly secured by bolts 85 to both the vertical and horizontal members to rigidize the connection between these members and to maintain these members at a right angle. Beam forming panels 77 are preferably plywood panels cut to the proper dimensions to form thesides and bottom of the beam, these panels extending transversely of the rows R of shoring fixtures and being supported by the vertical and horizontal members 73 and 75 of the various rows of shoring fixtures. The bottom beam forming panel as indicated at 77a is supported by support beams 87 (e.g., 2 X 4 lumber) carried by horizontal members 75. Vertical beam forming panels as indicated at 77b are prevented from moving outwardly by the vertical members 73. End panelsections, each being generally indicated at 89, are supported by interconnecting members 51 to provide a pouring surface for the 'slab between the outer ends of the adjacent deck panels 31 and the upper edges of the vertical beam forming panels 77b.

End sections 89 include a joist member 91 which extends transversely of the interconnecting members of the deck sections and an end panel 93 carried by joist member 91. The upper surface of the end panel is at substantially the same elevation as the upper surface of deck panel 31 and filler panel 35 thereby providing a substantially level pouring surface for the slab. The upper edges of the vertical beam forming panel 7711 are nailed to the outer edges of the end panels 93.

As shown in FIG. 4, each brace assembly 13 includes a pair of brace members, each being indicated at 95, extending between upper shoring post section 37 and the outer end of a respective deck panel 9. The lower ends of the brace members of each brace assembly are pivotally secured to the shoring post by a pin 97 carried by a bracket 99 welded to the upper post section. The brace members extend upwardly from pins 97 and diverge outwardly away from one another. A tube 100 extends between and is welded to the upper ends of the brace members, the length of this tube corresponding to the distance between the inner faces of mounting bosses 61 provided on the mounting plates 55 which are secured to the outer ends of deck section beams 27. The upper end of the brace assembly is pivotally secured to mounting bosses 51 by a. rod 101 which is inserted through the mounting bosses and through the tube, the rod being held in position by pins or nails N inserted in holes in the outer ends of the rod and then bent to prevent the nails from becoming dislodged from the holes. A crossbar 102 is welded to each of the brace members intermediate the ends thereof.

With deck sections 9 pivotally connected to support post 5 by means of brace assembly 13, the deck sections of each shoring fixture 3 may be folded along the shoring post to assume the collapsed position shown in FIG. 5 to facilitate transport and storage of the fixtures. It will be noted that with the shoring fixture of this invention in its collapsed or folded position, deck panels 31 of the deck sections face one another adjacent the shoring post thus preventing the pouring surfaces of the deck panels from being damaged during storage and transport of the fixtures.

In addition to carrying the lower ends of the brace members 95, pin 97 pivotally carries a strut 17. As shown in FIGS. 4 and 10, strut 17 is an angle-shape member having a sleeve 103 welded on one end, this sleeve surrounding pin 97 and constituting a spacer for holding the lower ends of brace members in proper position on the pin. Each strut 17 is pivoted on pin 97 for rotation in a vertical plane between a horizontal position in which the struts of the shoring fixtures in row R are connected to one another for bracing the shoring posts in the row and a raised position in which the strut lies along the brace assembly 13 'thereabove to permit accessbelow the shoring fixtures without interference from the struts. Crossbar 102 carries a spring clip 104 for engagement with strut 17 for holding the strut in its raised retracted position along brace assembly 13.

As shown in FIGS. 10 and 11, each strut 17 has a vertically disposed pin 107 projecting through and welded to the horizontal leg 109 ofthe angleshaped strut adjacent the outer end thereof. A series of equally spaced holes ll 1 l is provided in each horizontal leg109 of each strut for receiving the pin 107 of an adjacent strut to interconnect the struts of adjacent shoring fixtures in a row R to fix the spacing between the shoring posts 5 in the row. Bent pins or nails N are inserted in holes in pins 107 to fasten the struts relative to one another.

For pouring an overhead concrete structure (e.g., an overhead slab), shoring fixtures 3 may be moved into position in their collapsed or folded position (see FIG. 5) and then unfolded to assume their pouring position (see FIG. 2). The shoring fixtures are unfolded by pivoting each deck section 9 downwardly on its brace assembly 13 about pin-97carried in bracket 99 on the shoring post 5, andby then pivoting the deck section about rod 101 so that the deck section assumes a generally horizontal position with the deck panel 31 facing upwardly. The inner abutting ends of the deck section bear on the crosshead beam 7 and are secured thereto in end-to-end abutting relation by placing pins 63 in holes 65 in upper flange 49 of the crosshead beam. It will be noted that the shoring fixtures may be unfolded in a confined space from below, and when the shoring fixtures are erected, they have their pouring surfaces in position to support the slab to be poured. Other fixtures surfaces of deck panels 31 are adjusted to. be in substantially the same plane for providing a level pouring surface by adjusting the height of shoring'posts 5 by means of the screw jack 45. Shoring posts 5 of the fixtures in row R are secured together by fastening struts 17 to one another at a desired adjusted position to provide correct spacing between the fixtures in the row. The outer ends of the deck sections of the fixtures in the row are then secured together by extending interconnecting members 51 of. one of the deck sections into the outer ends of the deck section beams 27 of an adjacent shoring fixture and clamping the interconnecting member relative thereto by tightening clamping screws 67. If additional vertical support is required to support an extra thick slab which is to be formed (e.g., if the load supported by the shoring fixtures exceeds 250 lbs. per square foot), a shoring post 5 without deck sections 9 pivotally secured thereto may be placed below the joint between the outer ends of the deck sections of adjacent shoring fixtures in the row R and the pins 63 at the outer ends of the deck sections inserted in holes 65 in the upper flange 49 of crossbeam 7 of the additional support post 5.

The rows R of shoring fixtures 3 are laterally interconnected by braces 19 which extend diagonally between the outer ends of crosshead beam 7 of one row and pins 23 carried by shoring posts 5 of an adjacent row. Filler panels 35 are then laid on the end portions 33 of joists 29 which extend out beyond the lateral edges of deck panels 31, the deck panels and filler panels together constituting a horizontal pouring surface for supporting the concrete slab to be poured.

The shoring system of this invention is adapted such as to enable adjustment of the length of rows R and lateral adjustment thereof to form an overhead concrete slab of substantially any dimension. As shown in FIG. 3, the length of row R may be varied to accommodate any dimension of the slab to be formed by utilizing shoringfixtures having one or two of the deck section 9 supported thereby and by extending interconnecting members 51 for supporting end panels similar to end panels 89 to provide a pouring surface of a length corresponding to the slab to be poured. The lateral spacing between the rows of shoring fixtures R may be varied by fastening the diagonal braces 19 at different positions therealong to the pins 23 carried by the shoring are then unfolded in a similar manner and the pouring posts of the adjacent row R. These different lateral spacings of the rows are enabled by the series of holes 25 in brace members 19, and filler panels 35 of different widths are provided to fit between the deck panels 31 of the adjacent rows R. Special forms (not shown) constructed of plywood and supported by support posts 5 may be provided as required to provide pouring surfaces adjacent vertical columns, for example, which will support the overhead slab.

If the slab to be poured is to have horizontal concrete beams. formed therein, beam molds 53 are secured to the outer ends of interconnecting members 51 of adjacent shoring fixtures 3 in rows R at the location of the beams. The vertical members 73 and the horizontal members 75 are adjusted relative to one another to form a beam of the desired depth and width. Interconnecting members 51 which support the beam mold are extended or retracted relative to their deck section beams 27 to position the beam mold in its desired location. As heretofore noted, the interconnecting members may be secured in any position between their extended position and their retracted position thereby providing for adjustment of the positioning of the beam mold between the shoring fixtures. If the beam mold 53 is used, more distance must be provided between the shoring fixtures in each row R that support the beam form between the adjacent outer deck section ends thereof. This additional distance is provided for by fastening struts 17 of the adjacent shoring fixtures to one another for providing additional spacing between the shoring posts 5 of the adjacent shoring fixtures. End panels 89 which constitute the pouring surface between the outer edge of deck panel 31 and the upper edge of vertical beam form panel 77b are made to fit after the beam mold has been positioned in its desired location. It is contemplated that vertical members 73 and horizontal members 75 which constitute beam mold 53 may be used to form doorways in vertical walls, and inside and outside corners as well as overhead beams.

After the concrete slab has been poured and the concrete has sufficiently set,'deck sections 9 and beam molds 53 may be readily stripped from the poured structure and moved to a new location. Beam mold 53 may be removed from the beam without complete disassembly thereof by removing bolts 78 from interconnecting members 51 on one side of the beam and by loosening bolts between the vertical member 73 which has been unbolted from its interconnecting member and the horizontal members to permit pivoting of the unbolted vertical members out away from the concrete beam. The bolts 85 connecting the opposite vertical members to their interconnecting members are loosened but not removed and the entire beam mold may then be rotatably stripped from the concrete beam as a unit.

Shoring fixtures 3 may be stripped from the slab without disassembling them by operating screw jacks 45 to lower deck sections 9 away from the poured slab. In certain situations, groups of the shoring fixtures (see FIG. 3) may be stripped from the slab as a unit with the shoring fixtures from a row R constituting the group being rigidly interconnected to form a rigid truss-like unit by means of struts l7 and by interconnecting members SI joining the outer ends of their deck sections 9. This group of shoring fixtures may be moved from one pouring position to another as a unit, this type of shoring being referred to as fly shoring.

In accordance with this invention, deck sections 9 constitute mold sections which may be used as a deck section on a shoring post as abovedescribed or as a panel section for a vertical wall forming system, generally indicated at 112. Deck sections (or mold sections) 9 may be disconnected from shoring post 5 and arranged vertically in two parallel spaced apart rows (see FIGS. 8 and 9) with their deck panels 31 facing each other for providing vertical pouring surfaces for pouring a vertical concrete wall and thus constituting vertical wall forming system 112. More particularly, the

deck sections are placed on a footing or floor F with their deck section beams 27 extending vertically therefrom. Other deck sections are secured to the upper ends of the first-mentioned deck sections bearing on the footing F by extending interconnecting members 51 of one of the deck sections into the hollow deck section beams 27 of the abutting deck section and securing the interconnecting members relative thereto by tightening clamping screws 67. The deck sections may be stacked vertically to constitute a form corresponding to the height of the wall to be poured. Other deck sections are arranged in side-by-side abutting relation to the firstmentioned deck sections in the vertical plane of the row to correspond to the length of the wall to be poured. As shown in FIG. 9, the deck sections along the length of the wall to be poured are arranged relative to one another so thatends 33 of joist members 29 abut I nailing to the inner face, i.e., the face toward the vertical wall, of the joist members to extend between the adjacent vertical edges of the deck panels 311 of the adjacent deck sections and thereby providing a continuous vertical pouring surface for forming a vertical wall.

As shown in FIG. 9, the vertical rows of deck sections may be maintained in their proper vertical position by brace members 1M (shown in phantom) and the rows are maintained in proper spaced-apart relation corre sponding to the thickness of the wall to be poured by means of spacing bolts M5 (socalled she bolts) which extend between the filler panels of the opposing rows of deck sections. These spacing bolts include hollow, conical receptacles M7 which are fastened to the inner face of the tiller panels in register with a hole in the tiller panel and a tubular member 11% which extends between the inner ends of the receptacles on opposite sides of the wall to be formed. A threaded rod 121 is inserted through the holes in the filler panels, the conical receptacles and the tubular member, and nuts 123 are threaded on the ends of the rod to positively hold the filler panels and the rows of deck sections (be cause the tiller panels are nailed to the joists of the deck sections) in proper spaced apart relation. After the vertical concrete wall has been poured, deck sections 9 may be stripped from the wall by backing off nuts E23 and removing rod 112i. The receptacles M7 and tubular members 119 remain imbedded in the wall.

In view of the above, it will be seen that the several objects of the invention are achieved and other advantageous results attained.

As various changes could be made in the above constructions without departing from the scope of the invention, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

What is claimed is:

l. A shoring fixture for poured concrete construction or the like comprising:

a post;

a crosshead at the upper end of the post;

a pair of deck sections adapted to be supported in end-to-end abutting relation on the upper end of the post with the abutting ends of the deck sections bearing on said crosshead;

means for detachably securing said abutting ends of said deck sections on said crosshead;

means for bracing the deck sections extending between the post and the deck sections and connected to the deck sectionsadjacent their outer ends;

each said deck section comprising a pair of spaced apart parallel side beams extending lengthwise of the deck section, a deck panel constituting a pouring surface for the concrete which is to be poured; and

a pair of interconnecting members slidably mounted longitudinally of said side beams for movement be tween a retracted position in which the outer end of a respective interconnecting member is withdrawn into its respective side beam and an extended position in which its outer end projects out beyond the end of its respective deck section for being received by a respective side beam of an adjacent deck section thereby to rigidly secure said adjacent deck sections together.

2. A shoring fixture as set forth in claim 1 wherein said side beam includes means for releasably securing said interconnecting member relative to the side beam at any desired position between its retracted position and its extended position comprising a clamping screw threadably carried by the deck section beam, said screw being operable to secure said interconnecting member relative to the side beam and being reversely operable to release said interconnecting member therefrom.

3. A shoring fixture as set forth in claim 1 wherein said crosshead spans said side beams and wherein said means for detachably securing said abutting ends of said deck sections on said crosshead comprises a pin secured to and extending down from the inner end of each said side beam and a plurality of holes in each said crosshead adapted to receive said pins whereby the inner ends of said deck sections are held in end'to-end abutting relation on the crosshead thereby to provide a substantially continuous pouring surface.

4. A shoring fixture for poured concrete construction or the like comprising: v

a post;

a crosshead at the upper end of the post;

a pair of deck sections adapted to be supported in end-to-end abutting relation on the upper end of the post with the abutting ends of the deck sections bearing on said crosshead, each said deck section comprising a deck panel constituting a pouring surface for the concrete which is to be poured;

means for detachably securing said abutting ends of said deck sections on said crosshead; and

means for bracing the deck sections extending between the post and the deck sections and connected to the deck sections adjacent their outer ends, said bracing means being pivotally secured to said post and to said deck sections for permitting said deck sections to be folded next to said post in a collapsed position for facilitating storage and transport of the shoring fixtures, the pouring surfaces of each said deck panel being substantially parallel the post when said deck sections are in their collapsed positions.

5. A shoring fixture for poured construction or the like comprising:

a post;

a crosshead at the upper end of the post;

a pair of deck sections adapted to be supported in end-to-end abutting relation on the upper end of the post with the abutting ends of the deck sections bearing on said crosshead;

means for detachably securing said abutting ends of said deck sections on said crosshead; and

means for bracing the deck sections extending between the post and the deck sections and connected to the deck sections adjacent their outer ends, each said deck section comprising a pair of spaced apart parallel side beams extending lengthwise of the deck section and a plurality of joist members extending transversely on the side beams and a deck panel constituting a pouring surface for the concrete which is'to be poured, said deck panel and said joist members being secured to said side beams with the ends of said joist members being cantilevered to extend out beyond the lateral edges of said deck panel for supporting a tiller panel.

6. A shoring fixture as set forth in claim 1 wherein said post includes means for infinitely varying the height of a post over a specified range.

7. A shoring fixture as set forth in claim 6 wherein said post includes an upper section and a lower section, said upper section telescopically receiving said lower section and said upper section being axially movable relative to said lower section for varying the height of said post, and said height varying means comprises a stop carried by the lower section and adapted to be set in plurality of fixed positions along the length of the lower section, and a screw jack carried by the upper section bearing against'said stop whereby operation of the screw jack effects movement of the upper section relative to the lower section for adjusting the height of the post.

8. A mold section adapted for poured concrete construction comprising a pair of parallel spaced apart side beams, a plurality of joist members extending transversely on the side beams, a deck panel supported by said joist members with one surface of the deck panel constituting a pouring surface, a pair of interconnecting members slidably mounted longitudinally of said beams, each said interconnecting member being movable between a retracted position in which its outer end is withdrawn into its respective side beam and an extended position in which its outer end projects out beyond the end of said mold section, said interconnecting members being adapted to be received by a respective side beam of an adjacent mold section for rigidly joining said mold sections together, and means for releasably securing each interconnecting member relative to its respective side beam.

9. A shoring fixture for poured concrete construction or the like comprising:

a post;

a crosshead at the upper end of the post;

a pair of deck sections adapted to be supported in end-to-end abutting relation on the upper end of the post with the abutting ends of the deck sections bearing on said crosshead;

means for detachably securing said abutting ends of said deck sections on said crosshead; and

means for bracing the deck sections extending between the post and the deck sections and connected to the deck sections adjacent their outer ends, said bracing means being pivotally secured to said post and to said deck sections for permitting pivotal movement of each deck section independently of the other between an erected position in which the deck section has its inner end supported by said crosshead and its outer end supported by said bracing means in a generally horizontal position and a collapsed position in which the deck panel is folded adjacent said post for facilitating storage and transport, said fixture being movable into a desired location with said deck panels in their collapsed position and said deck panels being readily pivotal from below from their collapsed position to their erected position.

10. A shoring fixture as set forth in claim 9 wherein said fixture is adapted to be arranged adjacent others of said fixtures in a plurality of side-by-side rows, and includes means for vertically adjusting said post, means for releasably securing together the outer ends of the deck sections of one of the shoring fixtures with the outer ends of deck sections of an adjacent shoring fixture included within one of said rows.

11. A shoring fixture as set forth in claim '10 wherein each deck section comprises a pair of spaced apart side beams extending lengthwise of the deck section, a deck panel supported by the side beams, and means extending laterally out beyond the sides of said side beams and said deck section adapted to support a filler panel so that the outer surface of said filler panel and said deck panel are generally coplanar thereby to provide a continuous pouring surface.

12. A shoring fixture as set forth in claim 11 further comprising a plurality of joists extending transversely on the side beams, said deck panel being supported by said joist members, said joist members extending out beyond the lateral edges of said deck panel, and said filler panel being supported by the outer ends of said joist members.

13. A shoring fixture as set forth in claim 10 further comprising means for laterally interconnecting said shoring fixture with a corresponding shoring fixture in an adjacent row.

14. A shoring fixture as set forth in claim 10 wherein each said deck section includes a pair of interconnecting members slidably mounted longitudinally of said side beams for movement between a retracted position in which the outer end of a respective interconnecting member is withdrawn into its respective side beam and an extended position in which its outer end projects out beyond the end of its respective deck section for reception by a respective side beam of an adjacent deck section.

15. A shoring fixture as set forth in claim 14 wherein each said side beam includes means for releasably securing a respective interconnecting member relative thereto at any desired position between its retracted position and its extended position comprising a clamping screw threadedly carried by the side beam, said screw being operable to secure the interconnecting member relative to the side beam and being reversibly operable to release said interconnecting member therefrom, whereby with an interconnecting member of one of said deck sections extended and received by a respective side beam of an adjacent deck section and with said clamping screws of the respective side beams of the adjacent deck sections engaging said interconnecting member extending therebetween, said adjacent deck sections are rigidly interconnected.

16. A shoring fixture as set forth in claim further including means for interconnecting the posts of the shoring fixtures which constitute one of the rows comprising a pair of struts secured to said post of each fixture, the struts being on opposite sides of said post and extending horizontally outwardly therefrom in the line of said one row, said struts of adjacent shoring fixtures being adapted to be secured together for maintaining spacing between the shoring fixtures in said one row and for bracing the shoring fixtures relative to one another in the row.

17. A shoring fixture as set forth. in claim 16 wherein with the outer ends of two adjacent deck sections of two or more of said shoring fixtures in one of said rows being rigidly secured together in end-to-end abutting relation by said securing means and with the posts of said adjacent fixtures being interconnected together by said struts, these fixtures form a rigid truss-like unit which may be moved in one piece from one location to another.

18. A shoring fixture as set forth in claim 10 further comprising means for laterally interconnecting said shoring fixture with a corresponding shoring fixture in an adjacent row. 

1. A shoring fixture for poured concrete construction or the like comprising: a post; a crosshead at the upper end of the post; a pair of deck sections adapted to be supported in end-to-end abutting relation on the upper end of the post with the abutting ends of the deck sections bearing on said crosshead; means for detachably securing said abutting ends of said deck sections on said crosshead; means for bracing the deck sections extending between the post and the deck sections and connected to the deck sections adjacent their outer ends; each said deck section comprising a pair of spaced apart parallel side beams extending lengthwise of the deck section, a deck panel constituting a pouring surface for the concrete which is to be poured; and a pair of interconnecting members slidably mounted longitudinally of said side beams for movement between a retracted position in which the outer end of a respective interconnecting member is withdrawn into its respective side beam and an extended position in which its outer end projects out beyond the end of its respective deck section for being received by a respective side beam of an adjacent deck section thereby to rigidly secure said adjacent deck sections together.
 2. A shoring fixture as set forth in claim 1 wherein said side beam includes means for releasably securing said interconnecting member relative to the side beam at any desired position between its retracted position and its extended position comprising a clamping screw threadably carried by the deck section beam, said screw being operable to secure said interconnecting member relative to the side beam and being reversely operable to release said interconnecting member therefrom.
 3. A shoring fixture as set forth in claim 1 wherein said crosshead spans said side beams and wherein said means for detachably securing said abutting ends of said deck sections on said crosshead comprises a pin secured to and extending down from the inner end of each said side beam and a plurality of holes in each said crosshead adapted to receive said pins whereby the inner ends of said deck sections are held in end-to-end abutting relation on the crosshead thereby to provide a substantially continuous pouring surface.
 4. A shoring fixture for poured concrete construction or the like comprising: a post; a crosshead at the upper end of the post; a pair of deck sections adapted to be supported in end-to-end abutting relation on the upper end of the post with the abutting ends of the deck sections bearing on said crosshead, each said deck section comprising a deck panel constituting a pouring surface for the concrete which is to be poured; means for detachably securing said abutting ends of said deck sections on said crosshead; and means for bracing tHe deck sections extending between the post and the deck sections and connected to the deck sections adjacent their outer ends, said bracing means being pivotally secured to said post and to said deck sections for permitting said deck sections to be folded next to said post in a collapsed position for facilitating storage and transport of the shoring fixtures, the pouring surfaces of each said deck panel being substantially parallel the post when said deck sections are in their collapsed positions.
 5. A shoring fixture for poured construction or the like comprising: a post; a crosshead at the upper end of the post; a pair of deck sections adapted to be supported in end-to-end abutting relation on the upper end of the post with the abutting ends of the deck sections bearing on said crosshead; means for detachably securing said abutting ends of said deck sections on said crosshead; and means for bracing the deck sections extending between the post and the deck sections and connected to the deck sections adjacent their outer ends, each said deck section comprising a pair of spaced apart parallel side beams extending lengthwise of the deck section and a plurality of joist members extending transversely on the side beams and a deck panel constituting a pouring surface for the concrete which is to be poured, said deck panel and said joist members being secured to said side beams with the ends of said joist members being cantilevered to extend out beyond the lateral edges of said deck panel for supporting a filler panel.
 6. A shoring fixture as set forth in claim 1 wherein said post includes means for infinitely varying the height of a post over a specified range.
 7. A shoring fixture as set forth in claim 6 wherein said post includes an upper section and a lower section, said upper section telescopically receiving said lower section and said upper section being axially movable relative to said lower section for varying the height of said post, and said height varying means comprises a stop carried by the lower section and adapted to be set in plurality of fixed positions along the length of the lower section, and a screw jack carried by the upper section bearing against said stop whereby operation of the screw jack effects movement of the upper section relative to the lower section for adjusting the height of the post.
 8. A mold section adapted for poured concrete construction comprising a pair of parallel spaced apart side beams, a plurality of joist members extending transversely on the side beams, a deck panel supported by said joist members with one surface of the deck panel constituting a pouring surface, a pair of interconnecting members slidably mounted longitudinally of said beams, each said interconnecting member being movable between a retracted position in which its outer end is withdrawn into its respective side beam and an extended position in which its outer end projects out beyond the end of said mold section, said interconnecting members being adapted to be received by a respective side beam of an adjacent mold section for rigidly joining said mold sections together, and means for releasably securing each interconnecting member relative to its respective side beam.
 9. A shoring fixture for poured concrete construction or the like comprising: a post; a crosshead at the upper end of the post; a pair of deck sections adapted to be supported in end-to-end abutting relation on the upper end of the post with the abutting ends of the deck sections bearing on said crosshead; means for detachably securing said abutting ends of said deck sections on said crosshead; and means for bracing the deck sections extending between the post and the deck sections and connected to the deck sections adjacent their outer ends, said bracing means being pivotally secured to said post and to said deck sections for permitting pivotal movement of each deck section independently of the other between an erected positiOn in which the deck section has its inner end supported by said crosshead and its outer end supported by said bracing means in a generally horizontal position and a collapsed position in which the deck panel is folded adjacent said post for facilitating storage and transport, said fixture being movable into a desired location with said deck panels in their collapsed position and said deck panels being readily pivotal from below from their collapsed position to their erected position.
 10. A shoring fixture as set forth in claim 9 wherein said fixture is adapted to be arranged adjacent others of said fixtures in a plurality of side-by-side rows, and includes means for vertically adjusting said post, means for releasably securing together the outer ends of the deck sections of one of the shoring fixtures with the outer ends of deck sections of an adjacent shoring fixture included within one of said rows.
 11. A shoring fixture as set forth in claim 10 wherein each deck section comprises a pair of spaced apart side beams extending lengthwise of the deck section, a deck panel supported by the side beams, and means extending laterally out beyond the sides of said side beams and said deck section adapted to support a filler panel so that the outer surface of said filler panel and said deck panel are generally coplanar thereby to provide a continuous pouring surface.
 12. A shoring fixture as set forth in claim 11 further comprising a plurality of joists extending transversely on the side beams, said deck panel being supported by said joist members, said joist members extending out beyond the lateral edges of said deck panel, and said filler panel being supported by the outer ends of said joist members.
 13. A shoring fixture as set forth in claim 10 further comprising means for laterally interconnecting said shoring fixture with a corresponding shoring fixture in an adjacent row.
 14. A shoring fixture as set forth in claim 10 wherein each said deck section includes a pair of interconnecting members slidably mounted longitudinally of said side beams for movement between a retracted position in which the outer end of a respective interconnecting member is withdrawn into its respective side beam and an extended position in which its outer end projects out beyond the end of its respective deck section for reception by a respective side beam of an adjacent deck section.
 15. A shoring fixture as set forth in claim 14 wherein each said side beam includes means for releasably securing a respective interconnecting member relative thereto at any desired position between its retracted position and its extended position comprising a clamping screw threadedly carried by the side beam, said screw being operable to secure the interconnecting member relative to the side beam and being reversibly operable to release said interconnecting member therefrom, whereby with an interconnecting member of one of said deck sections extended and received by a respective side beam of an adjacent deck section and with said clamping screws of the respective side beams of the adjacent deck sections engaging said interconnecting member extending therebetween, said adjacent deck sections are rigidly interconnected.
 16. A shoring fixture as set forth in claim 10 further including means for interconnecting the posts of the shoring fixtures which constitute one of the rows comprising a pair of struts secured to said post of each fixture, the struts being on opposite sides of said post and extending horizontally outwardly therefrom in the line of said one row, said struts of adjacent shoring fixtures being adapted to be secured together for maintaining spacing between the shoring fixtures in said one row and for bracing the shoring fixtures relative to one another in the row.
 17. A shoring fixture as set forth in claim 16 wherein with the outer ends of two adjacent deck sections of two or more of said shoring fixtures in one of said rows being rigidly secured together in end-to-end abutting Relation by said securing means and with the posts of said adjacent fixtures being interconnected together by said struts, these fixtures form a rigid truss-like unit which may be moved in one piece from one location to another.
 18. A shoring fixture as set forth in claim 10 further comprising means for laterally interconnecting said shoring fixture with a corresponding shoring fixture in an adjacent row. 